Facebook has added a new option to contact a "trusted friend" to its safety centre so that bullying victims can now report to friends, as well as site moderators.

The social networking site has introduced the social reporting option that lets members to alert people such as parents or teachers. For more serious problems, users can also contact police or charity organisations through the website.

Facebook’s director of European policy Richard Allan said in the real world you have a sense of when you need to escalate something to the right organisation.

Allan said, "If someone is calling you names, it might not be appropriate to go directly to the police."

Facebook has also simplified its safety centre and improved its guides for adults and young people.

The changes were announced at the White House during an anti-bullying conference hosted by President Obama and his wife Michelle.

In the conference Obama revealed that he had been a victim of taunts as a child and that torment and intimidation must not be tolerated.

Obama said, "If there’s one goal of this conference, it’s to dispel the myth that bullying is just a harmless rite of passage or an inevitable part of growing up. It’s not."

Facebook recently teamed-up with the Samaritans to address suicidal content on its site.